Demand Duo
™
R
-
Series Installation and Operation Manual
6
Hot water can be
dangerous, especially for
infants or children, the
elderly, or infirm.
There is hot water scald
potential if the thermostat
is set too high.
Water temperatures over
125ºF (51ºC) can cause
severe burns or scalding
resulting in death.
Hot water can cause first degree burns with
exposure for as little as:
3 seconds at 140ºF (60ºC)
20 seconds at 130ºF (54ºC)
8 minutes at 120ºF (48ºC)
Test the temperature of the water before placing
a child in the bath or shower.
Do not leave a child or an infirm person in the
bath unsupervised.
DANGER
CAUTION
•
BURN HAZARD. Hot exhaust and vent may
cause serious burns. Keep away from the
water heater unit. Keep small children and
animals away from the unit.
•
Hot water outlet pipes leaving the unit can be
hot to touch.
FLAMMABLE
Flammable Vapors
WARNING
FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity of this
or any other appliance.
Install vent system per
local and national
codes.
Exposure to carbon
monoxide can cause
serious brain injury or
death. Read and follow
all instructions in this
section.
Do not install this water heater above 5,400 ft.
(1,646 m).
Do not obstruct water heater air intake.
Failure to properly vent this appliance can
result in death, personal injury and/or property
damage.
Gas and carbon monoxide detectors are
available.
Every building should have a carbon monoxide
(CO) alarm in central areas. Check batteries
monthly and replace them annually.
Do not operate water heater if flood damaged.
WARNING
Carbon Monoxide
Hazard
•
Install the vacuum relief valve per local
codes. Massachusetts 248 CMR Section
10.14 (I)
“
All potable water pressure tanks
shall be provided with a vacuum relief valve
at the top of the tank that will operate up to a
maximum water pressure of 200 P.S.I.G. and
to a maximum water temperature of 200°F
(93°C).
”
Vacuum Relief Valve
(Not Supplied)
If required, install per local code and
valve manufacturers
’
instructions.
